Backpack



FIG. 1 is a front perspective view of the backpack;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front perspective view of the backpack according to analternative embodiment;

FIG. 9 is a front elevation view of the embodiment of FIG. 8;

FIG. 10 is a rear elevation view of the embodiment of FIG. 8;

FIG. 11 is a right elevation view of the embodiment of FIG. 8;

FIG. 12 is a left elevation view of the embodiment of FIG. 8;

FIG. 13 is a top plan view of the embodiment of FIG. 8; and,

FIG. 14 is a bottom plan view of the embodiment of FIG. 8.

The broken lines showing portions of the backpack are included for thepurpose of illustrating environment and form no part of the claimeddesign.

CLAIM The ornamental design for a backpack, as shown and described.